package com.zkingsoft.tools;

import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.GraphicsEnvironment;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.imageio.ImageIO;

public class ImageUtil {

	public static void main(String[] args) throws Exception {

		// drawString();
		 fonts();
		// System.out.println(4 % 2);

	}

	public static void drawString(BufferedImage bimg, ImageMerge imgMerger) throws IOException, FileNotFoundException {
		
		// 得到Graphics2D 对象
		Graphics2D g2d = (Graphics2D) bimg.getGraphics();
		g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
		// 设置颜色和画笔粗细57bec0
		g2d.setColor(toColorFromString(imgMerger.getColor()));
		g2d.setFont(new Font(imgMerger.getFontFamily(), Font.ITALIC, imgMerger.getFontSize()));
		// 绘制图案或文字
		// g2d.drawString("红星国际会展中心", 445, 630);
		drawStringWithSpan(g2d, imgMerger.getText(), imgMerger.getX(), imgMerger.getY(), imgMerger.getWordSpacing());
		
	}

	/**
	 * 绘制字符间距
	 */
	private static void drawStringWithSpan(Graphics2D g2d, String text, int i, int y, int k) {
		List<String> txtList = new ArrayList<>();
		// 匹配中英文
		String s = "\\d+.\\d+|\\w+|[\u4e00-\u9fa5]";
		Pattern pattern = Pattern.compile(s);
		Matcher ma = pattern.matcher(text);

		while (ma.find()) {
			txtList.add(ma.group());
		}
		int x = i;
		for (int m = 0; m < txtList.size(); m++) {
			String target = txtList.get(m);
			g2d.drawString(target, x, y);
			// 没写一个字就增加一个间距，2个哦英文单词占用1个中文字符空间
			int b = (target.length() / 2) + (target.length() % 2);
			x += b * (g2d.getFont().getSize() + k);
		}

	}

	/**
	 * @Description:小图片贴到大图片形成一张图(合成)
	 * @author:liuyc
	 * @throws IOException
	 * @time:2016年5月27日 下午5:51:20
	
	public static final void overlapImage(ImageMerge imgMerge) throws IOException {
		BufferedImage big = ImageIO.read(new File(imgMerge.getSrcPath()));
		BufferedImage small = ImageIO.read(new File(imgMerge.getSmallPath()));
		Graphics2D g = big.createGraphics();
		g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, imgMerge.getAlpha()));
		g.drawImage(small, imgMerge.getX(), imgMerge.getY(), imgMerge.getWidth(), imgMerge.getHeight(), null);
		g.dispose();
		ImageIO.write(big, imgMerge.getOutFilePath().split("\\.")[1], new File(imgMerge.getOutFilePath()));
	}
 */
	public static Color toColorFromString(String colorStr) {
		Color color = new Color(Integer.parseInt(colorStr, 16));
		return color;
	}

	public static void fonts() {
		String[] fonts = GraphicsEnvironment // GraphicsEnvironment(抽象类) 图形环境类
				.getLocalGraphicsEnvironment() // 获取本地图形环境
				.getAvailableFontFamilyNames(); // 获取可用字体family名

		int fontCount = 0; // 字体数统计
		for (String font : fonts) {
			fontCount++;
			System.out.println(font);
		}
		System.out.println("系统字体数:" + fontCount);
	}

}
